Adhesive comprising post-chlorinated polyethylene and polyvinyl chloride

Abstract

An adhesive composition particularly suitable for adhering polyvinyl chloride and an olefinic polymer comprising 1 to 99% by weight of post-chlorinated polyethylene having a mean molecular weight of about 20,000 to 200,000, a specific gravity of 1.00 to 1.35 and a chlorine content of 5 to 50% by weight and 99 to 1% by weight of polyvinyl chloride having a mean degree of polymerization of about 300 to 2,500.

What is claimed is: 
     
       1. A composite material of a thermoplastic resin and an olefinic polymer, said thermoplastic resin comprising a. 2 to 50 parts by weight of post-chdlorinated polyethylene having a specific gravity of 1.00 to 1.35, a chlorine content of 5 to 50% and a mean molecular weight of from about 20,000 to 200,000, and   b. 100 parts by weight of polyvinyl chloride having a mean degree of polymerization from about 300 to 2,500, and said thermoplastic resin and said olefinic polymer having a contact interface therebetween.   
     
     
       2. The composite material as claimed in claim 1, wherein said olefinic polymer has been extruded through an extruder and then laminated with said thermoplastic resin. 
     
     
       3. The composite material as claimed in claim 1, wherein said thermoplastic resin and said olefinic polymer have been co-extruded. 
     
     
       4. The composite material as claimed in claim 1, wherein said thermoplastic resin and said olefinic polymer have been heat sealed at the contact interface. 
     
     
       5. The composite material as claimed in claim 1, wherein said adhesion of the thermoplastic resin and the olefinic polymer has been conducted by means of a pressing machine.